linux-kernel - RE: [PATCH V2] ASoC: max98373: Added max98373

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Message-ID: <DM6PR11MB3131E267C1EDF9254BC7D313E7D10@DM6PR11MB3131.namprd11.prod.outlook.com>
Date:   Wed, 28 Nov 2018 17:07:02 +0000
From:   Ryan Lee <RyanS.Lee@...imintegrated.com>
To:     Mark Brown <broonie@...nel.org>
CC:     Liam Girdwood <lgirdwood@...il.com>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Grant Grundler <grundler@...omium.org>,
        Kuninori Morimoto <kuninori.morimoto.gx@...esas.com>,
        Benson Leung <bleung@...omium.org>,
        "alsa-devel@...a-project.org" <alsa-devel@...a-project.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "ryan.lee.maxim@...il.com" <ryan.lee.maxim@...il.com>
Subject: RE: [PATCH V2] ASoC: max98373: Added max98373_reset for stable amp
 reset

>-----Original Message-----
>From: Mark Brown <broonie@...nel.org>
>Sent: Wednesday, November 28, 2018 1:50 AM
>To: Ryan Lee <RyanS.Lee@...imintegrated.com>
>Cc: Liam Girdwood <lgirdwood@...il.com>; Jaroslav Kysela
><perex@...ex.cz>; Takashi Iwai <tiwai@...e.com>; Grant Grundler
><grundler@...omium.org>; Kuninori Morimoto
><kuninori.morimoto.gx@...esas.com>; Benson Leung
><bleung@...omium.org>; alsa-devel@...a-project.org; linux-
>kernel@...r.kernel.org; ryan.lee.maxim@...il.com
>Subject: Re: [PATCH V2] ASoC: max98373: Added max98373_reset for stable
>amp reset
>
>On Wed, Nov 28, 2018 at 03:20:16AM +0000, Ryan Lee wrote:
>> Signed-off-by: Ryan Lee <ryans.lee@...imintegrated.com>
>> ---
>
>Not seeing a changelog here like I asked for :(

Actually I added changelog as below. Do you mean this is not sufficient?

Changes since v1 : Removed unusual repeat for amp software reset and verification.
                   Amp software reset will be performed once and it repeats verification maximum 3 times if it is failed.
                   Wait 10ms before every verification trial. Maximum 30ms delay will be applied to wait AMP idle state.

>
>> Changes : Created max98373_reset function to minimize code duplication.
>>           Changed regmap_write to regmap_update_bits. Other bits except LSB
>need to be masked.
>>           Added reset verification step to make sure software reset is completed
>well. Software reset is done in 10ms in normal case.
>>           Revision ID is available when the amp is in the idle state which means
>software reset is completed.
>>           Software reset will be performed maximum 3 times to avoid amp reset
>failure. Generally it is done in the first trial.
>>           sleep time after software reset is increased + 30ms for every retrial.
>Maximum possible msleep time is 100 ms (initial 10 ms + 30 ms * 3 times).
>
>This looks like it's supposed to be a changelog but it isn't one?